| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef _LINUX_CPU_SMT_H_ |
| #define _LINUX_CPU_SMT_H_ |
| |
| enum cpuhp_smt_control { |
| CPU_SMT_ENABLED, |
| CPU_SMT_DISABLED, |
| CPU_SMT_FORCE_DISABLED, |
| CPU_SMT_NOT_SUPPORTED, |
| CPU_SMT_NOT_IMPLEMENTED, |
| }; |
| |
| #if defined(CONFIG_SMP) && defined(CONFIG_HOTPLUG_SMT) |
| extern enum cpuhp_smt_control cpu_smt_control; |
| extern unsigned int cpu_smt_num_threads; |
| extern void cpu_smt_disable(bool force); |
| extern void cpu_smt_set_num_threads(unsigned int num_threads, |
| unsigned int max_threads); |
| extern bool cpu_smt_possible(void); |
| extern int cpuhp_smt_enable(void); |
| extern int cpuhp_smt_disable(enum cpuhp_smt_control ctrlval); |
| #else |
| # define cpu_smt_control (CPU_SMT_NOT_IMPLEMENTED) |
| # define cpu_smt_num_threads 1 |
| static inline void cpu_smt_disable(bool force) { } |
| static inline void cpu_smt_set_num_threads(unsigned int num_threads, |
| unsigned int max_threads) { } |
| static inline bool cpu_smt_possible(void) { return false; } |
| static inline int cpuhp_smt_enable(void) { return 0; } |
| static inline int cpuhp_smt_disable(enum cpuhp_smt_control ctrlval) { return 0; } |
| #endif |
| |
| #endif /* _LINUX_CPU_SMT_H_ */ |
